[Bladder tumor occluding diverticular orifice: a case with difficult diagnosis due to hemorrhage into diverticulum].

: We experienced a case of bladder diverticular tumor with intradiverticular hemorrhage in which preoperative diagnosis was difficult. It simultaneously occurred with a bladder tumor. The patient, a 70-year-old man complained of macrohematuria and pollakisuria. The cystoscopic examination revealed a bladder tumor. The radiographic examination suggested a bladder tumor with extravesical hemorrhage. We diagnosed an invasive bladder tumor and performed radical cystectomy and ileal conduit diversion. Postoperative diagnosis was bladder tumor and diverticular tumor.